There is no fun or entertainment in gambling and the end result is a loss, someone has to make some money for the lost time unless you have something else on your mind other than gambling!
I think you are not trying to enjoy the games inside the gambling game because you want to win the money. If you don't have any target in the gambling games, then I think you can have fun in every gambling game because you only play the game without wanting to chase the win money. It is normal if we are losing the money in gambling, but that will not be normal if we still chase the win money and spend more money inside the game.
If you think the end of playing gambling will be losing the money, maybe you will need to make a limit of using the money so you don't have to lose all the money you have so you can come back to the games in the other games. I am sure that many of us are having fun in gambling games and they don't think that gambling is a way to make money.